Add a comment for Python binary names.

diff --git a/src/support/os.cpp b/src/support/os.cpp
index 9a901cfd02d8d4140ba0fc6f2983333543a39f9e..d34adee4202eb2aaec9a189e93786d18565d6af8 100644 (file)
--- a/src/support/os.cpp
+++ b/src/support/os.cpp
@@ -129,6 +129,7 @@ static string const find_python_binary()
        }
 
        // last chance: try the unversioned name
+       // This case is very common on Windows.
        if (command.empty())
          command = python_call("python");